Bargraph thermometer (CB9360E)

Found in Radio Electronics from the 90s, this thermometer uses an integrated circuit that is unusual today. The sensor is a thermistor or NTC.

| Clique na imagem para ampliar |

1W Amplifier (CB6293E)
The PA222 integrated circuit used in this project from an American 1967 documentation is not...
Infrared Alarm (CB16907E)
This circuit with an optical path sensor was found in a 1995 documentation. The circuit fires...
50 ohm line booster (CB6221E)
This circuit was found in an 80's Electronic Design. It amplifies TTL fast signals for a coaxial...